From: David Howells <dhowells@redhat.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: dhowells@redhat.com, Petr Pavlu <petr.pavlu@suse.com>,
David Woodhouse <dwmw2@infradead.org>,
Luis Chamberlain <mcgrof@kernel.org>,
Daniel Gomez <da.gomez@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
Aaron Tomlin <atomlin@atomlin.com>,
keyrings@vger.kernel.org, linux-modules@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] sign-file: Remove support for signing with PKCS#7
Date: Wed, 12 Nov 2025 15:52:40 +0000 [thread overview]
Message-ID: <1235767.1762962760@warthog.procyon.org.uk> (raw)
In-Reply-To: <0b18e4cd726c6d986e969a78bff0aaaf6affd3a0.camel@HansenPartnership.com>
James Bottomley <James.Bottomley@HansenPartnership.com> wrote:
> > We're looking at moving to ML-DSA, and the CMS support there is
> > slightly dodgy at the moment, so we need to hold off a bit on this
> > change.
>
> How will removing PKCS7_sign, which can only do sha1 signatures affect
> that? Is the dodginess that the PKCS7_... API is better than CMS_...
> for PQS at the moment? In which case we could pretty much do a rip and
> replace of the CMS_ API if necessary, but that would be a completely
> separate patch.
OpenSSL-3.5.1's ML-DSA support isn't completely right - in particular
CMS_NOATTR is not currently supported. I believe there is a fix in the works
there, but I doubt it has made it to all the distributions yet. I'm only
asking that we hold off a cycle; that will probably suffice.
David
next prev parent reply other threads:[~2025-11-12 15:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-11 15:48 [PATCH 0/2] module: Remove SHA-1 support for module signing Petr Pavlu
2025-11-11 15:48 ` [PATCH 1/2] " Petr Pavlu
2025-11-11 22:37 ` Aaron Tomlin
2025-11-11 15:48 ` [PATCH 2/2] sign-file: Remove support for signing with PKCS#7 Petr Pavlu
2025-11-11 16:53 ` James Bottomley
2025-11-12 13:51 ` Petr Pavlu
2025-11-12 15:05 ` James Bottomley
2025-11-12 15:36 ` David Howells
2025-11-12 15:47 ` James Bottomley
2025-11-12 15:52 ` David Howells [this message]
2025-11-12 15:58 ` James Bottomley
2025-11-11 16:22 ` [PATCH 0/2] module: Remove SHA-1 support for module signing Sami Tolvanen
2025-12-22 20:24 ` Sami Tolvanen
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